B, single screw pump before adding buffer tank in pipeline, the buffering can store a certain amount of crude oil, and a current limiting device for mixture pumps supply a certain amount of crude oil.
单螺杆泵前管路中增设缓冲罐，在缓冲罐里储存一定量的原油，并用一套限流装置给混输泵供给一定量的原油。
The controller receives a data block from an external rewriting device to store it in the first buffer.
该控制器从外部重写装置接收数据块并将其存储在第一个缓冲区。
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